GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

mcu/riscv/include/math.h

@@ -0,0 +1,61 @@
+
+#ifndef _MATH_H_
+#define _MATH_H_
+
+#define FP_NAN         0
+#define FP_INFINITE    1
+#define FP_ZERO        2
+#define FP_SUBNORMAL   3
+#define FP_NORMAL      4
+
+# ifndef HUGE_VALF
+#  define HUGE_VALF (__builtin_huge_valf())
+# endif
+
+# ifndef INFINITY
+#  define INFINITY (__builtin_inff())
+# endif
+
+# ifndef NAN
+#  define NAN (__builtin_nanf(""))
+# endif
+
+#define fpclassify(__x) (__builtin_fpclassify (FP_NAN, FP_INFINITE, \
+					 FP_NORMAL, FP_SUBNORMAL, \
+					 FP_ZERO, __x))
+#ifndef isfinite
+#define isfinite(__x)	(__builtin_isfinite (__x))
+#endif
+#ifndef isinf
+#define isinf(__x) (__builtin_isinf_sign (__x))
+#endif
+#ifndef isnan
+#define isnan(__x) (__builtin_isnan (__x))
+#endif
+#define isnormal(__x) (__builtin_isnormal (__x))
+
+float logf(float x);
+float sqrtf(float x);
+float powf(float x, float y);
+float fabsf(float x);
+float sinf(float x);
+float cosf(float x);
+
+#undef	log
+#define	log(x)		logf(x)
+#undef	pow
+#define	pow(x, y)	powf(x, y)
+#undef	abs
+#define	abs(x)		fabsf(x)
+#undef	fabs
+#define	fabs(x)		fabsf(x)
+#undef	sqrt
+#define	sqrt(x)		sqrtf(x)
+#undef	sin
+#define	sin(x)		sinf(x)
+#undef	cos
+#define	cos(x)		cosf(x)
+
+
+#endif /* _MATH_H_ */
+